躲兵洞

Slipping through a hidden doorway in a bustling Qianmen shop, imagine finding yourself in the Dixia Cheng, the Underground City. This isn’t just any city. This is Beijing’s hidden world, a sprawling labyrinth built beneath our feet. Constructed between 1969 and 1979, the Underground City was China’s response to the escalating tensions with the Soviet Union. Chairman Mao Zedong envisioned a subterranean safe haven, a place where Beijing’s six million residents could seek refuge from nuclear war. It was a secret city, an “Underground Great Wall,” designed to protect the heart of China. Think of it: a network of tunnels stretching 85 square kilometers, 8 to 18 meters below the surface. This was more than just a shelter. The Underground City was equipped with restaurants, clinics, schools, theaters, even a roller-skating rink and a mushroom farm. Everything needed to sustain life was down here. Air vents, over 2,300 of them, could be sealed to protect inhabitants from poison gas. Water-tight hatches and thick concrete gates stood ready to defend against biochemical attacks and nuclear fallout. The scale of this project is staggering. Over 300,000 citizens, including students, volunteered their time, some even digging without machinery. They used materials from demolished sections of Beijing’s ancient walls, including the old gates of Xizhimen, Fuchengmen, and Chongwenmen. Although never used for its intended purpose, the Underground City wasn’t abandoned. Parts of it were repurposed as hotels, businesses, and entertainment venues. Even now, the local authorities regularly check for leaks and pests, ensuring the Underground City remains intact. While officially opened to tourists in 2000, offering glimpses into this hidden world, the Underground City has been closed for renovations since 2008. Visitors who experienced it described the atmosphere as “dark, damp, and genuinely eerie.” One can only imagine walking those dimly lit tunnels, seeing the faded slogans urging citizens to “Accumulate Grain” and “Prepare for War, Prepare for Famine”. The Underground City remains a testament to a tense era, a hidden marvel beneath the bustling streets of Beijing. A secret world waiting to be rediscovered.